Touch pen



FIG. 1 is a front and right side perspective view of a touch pen showing my new design;

FIG. 2 is a rear and left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is another front and right side perspective view thereof, shown in a configuration of use.

The broken lines in the drawings depict portions of the touch pen that form no part of the claimed design. 

CLAIM The ornamental design for a touch pen, as shown and described. 